Cooling device for rotary gas-engines.



' A. I. SEAMAN. COGLING DEVICE FOR ROTARY GAS ENGINES. APPLIGATYON FILED APR. 2a, 1913.

[L 1 fis fiflfih I Patented (M115, 1915.

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.QLBERT J.

CHAUNCEY ROWE, OF BOSTON, MASSACHUlEETTS.

COOLING DEVICEFOR ROTARY GfiSElflQi'lIlElQ.

"neciflcatioa of Letters Patent.

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Application filed April 2c, 1913. semi an. awe.

Z3, r/f/ whom it. may concern.

in it known that I, innna'r ill. SEAMAN, of lfloston in the county of Suffolk and Htate oi Massachusetts, have invented cer tain new anti useful Improvements in Cooling licricrs for Rotary Gas-Engines, of which the following: is a specification, retei we e hei ha l to the accompanying drawtorir'nn; part thereof.

Loi invention hasreiercncc to improve meals in cooling (.lQVlCQS for cylinders for rotary gas or internal combustion engines.

The ii'i\' ntion rel. es particularly to the construction of cooling devices for cylinders of engines whereby currents of air are (lne object of the invention is to provide a non-l anll ellicient means for eil'ecting radiation or" heat iron: .the combustion chambers of the cylirulcrs of rotary gas enginesand for more cfiectually carrying of? the heat radiated.

'5 lther objects of the invention will appear from the iollorring' description.

The invention consists in the means for 'i 'reug'thcning the cylinders against radial T52. sure and assisting'in the radiation of therefrom as well as in the means for tim air currents around. said cylinders.

in such other e inv ntion also consists features or construction and comb!- tier member in elevation, line :r--:r indicating the direction of its a Fig. 2, represeats a cross spetional View taken on line Fig. 3, represents a. similar line 3--3 Fig. 1. Fig. 4-, repitiidinal sectional. view taken 'i. It 5, re tiresents on one of the cylinders.

haracters.of reference designate parts throughoiit.

crank case of any suitable construction for a motor c a ii the ends of which are closed sheetmetal cylinder-heads or caps '2 i Le flanges 8. 8. These caps i, l

.ir (ml arourul the combustion chambers of r Iii. the drawings 5 indicates the of character anrl having the are secured; in place by the rails Fl, 9 scciirecl in the bearing plates 10, 16 which engage the flanges 8, 8 of the rcsncctive lieatls or caps T, '2'. Nuts 11, 11 are irovicled. for said rods 9 to resist the ontwarl pressure on said plates l0, 10. I i

In order to strengthen the outer enl porac tion of the cylinder approximately attic point a t which the pl' essnreofthei ternal 8) plosion is exerted l winrlrthis or cylinder with wire 1?, of a suitah this purpose .l have Found that p called, is particularly arla'pterl. it that thecoils of this ire 32 tend to v the radiation of heat from the cylintler the atmosphere and, in to more effectually carry off such radiated. heat I provicle the cylintlers with the pairs of "cattle plates 13 each of which is secured to one of sai-cl rods 9: 9 and extens partially arountl Wire wound portion of the cylinder to other of said tie rods 9, 9, against "which Gilli said battle plate bears, and is tl'len bent out war-(l. Each pair of these halile platcsspaced from the Wire wound. portion of the cylin dcr, forms an air cooling chamber having; a comparatively large mouth or entrancef "r14? located. toward thiigl i rection which the moving in the direction lnicated by the titrows (1, a. in Figs. 2 and 3 of the chm.

the air currents will. through saicl coniing chambers in the directions indicated by the arrows l) 5 of saicl figures, Whereh the air currents will he director} ahl'e force against the coils of the Wire 1 and, to some extent, beta-w n the coils ol said wires so tha heat lat it between said coils will he (li =turhc l anti driven oiif lay said air currents.

By the use of the cylinder heath; or caps 7, 7 anti their securing" means .1 reduce t cost of manufacturing the cylinders and finrl that the strain on one oi said heacls 1'- caps at the explosion of a charge fa. therein is rcsistetl largely by the other of saicl heads or caps and theconnecticns ti ith which, at this time is antler of the explocling cha in its cylii That is the charges a hoth cyin-J r:

are exploded smash-ant.

l "ll (1 'Patent.

l. A gas engine cooling device comprisin a crank case, cylinders mounted thereon and in alinenient on opposite sides of the crank ease,, cylinder heads, a series of tie rods extending the full length of said cylinders and cranlr case for holding said heads in place, and bajlle plates mounted on certain of said tie rods and partially embracing said cylinders.

A gas engine cooling device comprising a crank case, cylinders mounted thereon in alinement on opposite sides of said crank case, cylinder heads for said cylinders, tie rods for said cylinder heads spaced from said cylinders, \vrappings o'l' coiled wire on said cylinders, and pairs o'l. ballle plates mounted oncertain ol. said tie rods and partially embracing said \rire windings whereby air chambers are formed having wide mouths and restricted outlets.

3. A rotary gas engine comprising a crank case, a pair of cylinders mounted thereon and extending in alinernent on opposite sides of said crank case, cylinder heads mounted on said cylindeis, bearing members on said cylinder heads, tie rods to which said bearing members are secured, wire windings closely ei'nbracing the cylinders adjaccntsaid cylinder l'icads,'and pairs of baliie plates secured to pairs of said tie rods. spaced from and partially embracing said \ri-re windings said respective pairs ol ballle plates extending in oppositedirections from the tie rods to which they are secured whereby air cooling compartments are l'ornied ha lllQ mouths open in opposite directions.

' ALBERT J. SEAMAN.

Witnesses 

